Zaid Elkurdi, the developer behind AssistantEnhancer and International Locations for Siri, has developed a new tweak that will allow you to use activator and gestures to command and conveniently thumbs up and thumbs down music while Pandora is playing. The tweak will also add functional buttons for this, just as they would in the Pandora app, allowing users to skip or thumbs down a song, and bookmark a song by holding down the thumbs up button.

update: oddly, once I tap one of the white squares, the buttons show up (with the button I tapped highlighted correctly).

Update 2: and then the thumbs up stays highlighted for the next song(s) until I thumbs down something.

Same here.

Yeah, you'll be the coolest person in the room when you pull one out and show it around, but that gets old fast when three other people have them and one person somehow has one that glows in the dark.John C. DvorakThe American columnist and broadcaster in article 'Rethinking the iPhone' in PC Magazine.